Combination lock



FIG. 1 is a perspective view from above of the combination lock according to the invention;

FIG. 2 is a front elevational view of the lock;

FIG. 3 is a top view of the lock;

FIG. 4 is a side elevational view of the lock; and,

FIG. 5 is a perspective view from below of the lock. 

The ornamental design for a combination lock, as shown. 